The game uses real locations as virtual "hubs" for players to visit and receive in-game rewards for catching Pokemons on their smartphone screens. Museums, restaurants and even churches can be designated as hubs, and some of those venues are trying to get the most out of their new visitors.

The drivers of Joyride Nashville, a golf cart shuttle service in downtown, noticed over the weekend younger riders asking to be taken to various landmarks all over the city while playing "Pokemon Go." On Monday, the company launched an official private Pokemon Go! Tour.

"We ... booked seven tours in 24 hours," said Joyride Nashville COO Grant Rosenblatt. "We have mainly a lot of adults and tourists downtown, but this is a great way to get families involved with our services."

For $45 a person, families get a 90-minute tour in a private golf cart within a 2.5-mile radius of downtown Nashville.

The game is currently the top downloaded free app on the Apple store, surpassing Snapchat, Uber and Instagram. The game could soon overtake Twitter in terms of the two apps' number of daily active users, according to digital intelligence company SimilarWeb.

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Cheekwood Botanical Garden is also trying to get the most from all those users. The garden has at least a dozen Pokemon hubs on its grounds, and is offering $2 off admission for anyone with the "Pokemon Go" app.

"We thought this would be a great way to get a new audience to come visit ," said Mary Brenna Corr, Cheekwood director of marketing.